Zinc-Plated External Serrated Locking Washers

• Customization: Available
• Type: Flat Gasket
• Material: Carbon Steel
• Model NO.: GB/T 862.2-1987
• Combination Washer Structure: A Type
• Combination Washer Packaging: All Inclusive
• Spring Washer Type: Standard
• Transport Package: Bag
• Specification: M2-M20
• Trademark: LING KE
• Origin: Yong Nian
• HS Code: 731822
• Production Capacity: 200000/Year
• Package Size: 80.00cm * 40.00cm * 40.00cm
• Package Gross Weight: 50.000kg

Product Description

Electro - galvanized external serrated lock washers are circular metal components with a series of sharp, radially - outward - pointing serrations along their outer circumference. 

Design and Structure

Electro - Galvanizing Advantage

Application Scenarios

Electro - galvanized external serrated lock washers are circular metal components with a series of sharp, radially - outward - pointing serrations along their outer circumference. These serrations are the key feature of their anti - loosening design. When installed between a nut or bolt head and the workpiece, as the fastener is tightened, the serrations dig into the contacting surfaces. For example, in a mechanical device where bolts are used to hold parts together, the external serrations bite firmly into the relatively soft surface of the connected components. This action creates multiple points of high - friction contact, generating a strong frictional force that resists the rotation of the fastener. The serrations are evenly spaced and designed with a specific angle and height to ensure optimal gripping power. Compared to smooth - edged washers, the serrated structure provides a significantly enhanced anti - loosening effect, especially in applications where vibration or dynamic loads are present.

The electro - galvanizing process applied to these lock washers offers crucial benefits. Firstly, it provides excellent corrosion resistance. Through electro - deposition, a thin layer of zinc is evenly coated on the surface of the washer. Zinc is more reactive than the base metal (usually steel), so it acts as a sacrificial anode. Even if the zinc coating is scratched in some areas, the exposed steel is still protected because the zinc will corrode preferentially, preventing the underlying steel from rusting. This makes electro - galvanized external serrated lock washers highly suitable for use in various environments, including outdoor applications where they are exposed to moisture, humidity, and atmospheric pollutants. Secondly, electro - galvanizing gives the washers a relatively smooth and uniform finish, which not only improves their appearance but also helps in reducing the risk of stress concentration points on the surface. Additionally, compared to some other corrosion - prevention methods like hot - dip galvanizing, electro - galvanizing can offer more precise control over the coating thickness, ensuring consistent performance across a batch of washers.

Electro - galvanized external serrated lock washers find extensive applications across multiple industries. In the automotive industry, they are used to secure various components. For example, in engine assemblies, they are used to fasten parts like the cylinder head cover, where high vibration and temperature fluctuations occur. The anti - loosening property ensures that the bolts remain tight, preventing oil leaks and maintaining the proper functioning of the engine. In the manufacturing of industrial machinery, they are used in the assembly of equipment such as conveyor belts, motors, and pumps. These machines often operate under continuous vibration and heavy loads, and the external serrated lock washers help to keep the fasteners in place, reducing the need for frequent maintenance and ensuring the stable operation of the machinery. In the construction sector, they are used in the installation of structural steel components. In a building's framework, for instance, they are used to fasten beams and columns together, providing additional stability and resistance to wind and seismic forces. They are also commonly used in household appliances, such as washing machines and dryers, where they prevent the loosening of bolts due to the vibration generated during operation.

Packing & Delivery

Bag Packaging

Carton Packaging

Fasteners can be packaged in durable plastic bags, which are available in various sizes to accommodate different quantities (e.g., small batches of screws, nuts, or bolts). The bags are typically sealed by heat or with a zipper to prevent moisture, dust, and loss of contents. This method is lightweight, cost-effective, and suitable for retail sales, small shipments, or situations where easy access to the fasteners is needed. Additionally, clear plastic bags allow for quick visual identification of the products inside.

For larger quantities or bulk transportation, cartons are commonly used. These are sturdy cardboard boxes, often reinforced with corrugated layers to provide protection against impact during handling and shipping. Fasteners in cartons are usually pre-packed in bags or separated by dividers to avoid friction and damage. Cartons can be labeled with product details (e.g., type, size, quantity) and are stackable, optimizing storage and logistics efficiency. This method is ideal for industrial orders, wholesale distribution, or long-distance transportation where durability is a priority.

Company Profile

Company Name

 Hebei LING KE Metal Products Manufacturing Co.has firmly established itself as a leading force in the fastener industry, with a rich history and a commitment to excellence that spans over 10 years. Since its inception, the company has been dedicated to providing high-quality fasteners and comprehensive fastening solutions to a diverse range of industries worldwide.In recent decades, Hebei LING KE Metal Products Manufacturing Co. has expanded its footprint globally, establishing strategic partnerships and distribution centers in key regions around the world. This has allowed the company to better serve its international customer base and meet the growing demand for its products in emerging markets.